A low-pressure cylinder contains fire extinguishing agents at a pressure lower than which value?

A low-pressure cylinder is defined by its operating pressure, which is lower than specific thresholds established in safety standards. For fire extinguishers, a low-pressure cylinder typically operates at pressures below 300 psi. Therefore, identifying the correct threshold is crucial for safety and proper handling.

The correct answer indicates that low-pressure cylinders contain extinguishing agents at pressures lower than 500 psi, adhering to guidelines that categorize extinguishers based on their pressurization levels. This standard allows for the safe use, handling, and maintenance of fire extinguishing equipment.

Understanding the classification of pressure in fire extinguishing systems is important because it affects everything from usage methods to inspection and maintenance requirements. A cylinder that operates at levels above these classifications (300 psi and above) would typically be considered a high-pressure cylinder and would require different handling protocols.